Select the circumference and area for the circle to the nearest hundredth. Use 3.14 for pi A circle has a diameter of 30.8 in.

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?

Charlie is at an amusement park that has 18 different rides. each ride costs $1.75. the function c(r) = 1.75r represents the total amount of money that charlie will spend if he goes on r rides, but he never goes on the same one more than once. what domain and range are reasonable for the function?

Simplify each expression. use positive exponents. show work . (x –2 y –4 x 3 ) –2